ances. If I find that at a certain period in ancient history, the encouragements to have a family were great, that early marriages were consequently very prevalent, and that few persons remained single, I should infer with certainty that population was rapidly increasing, but by no means that it was then actually very great; rather, indeed, the contrary, that it was then thin, and that there was room and food for a much greater number. On the other hand, if I find that at this period the difficulties attending a family were very great; that, consequently, few early marriages took place, and that a great number of both sexes remained single, I infer with certainty that population was at a stand; and, probably, because the actual population was very great in proportion to the fertility of the land, and that there was scarcely room and food for more.
